SKU: 32601463159

RadioMaster ExpressLRS USB UART Firmware Flashing Dongle V2

$16.16 $17.95
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Description

RadioMaster ExpressLRS USB UART Firmware Flashing Dongle V2The RadioMaster ExpressLRS USB UART Firmware Flashing Dongle V2 offers reliable ELRS receiver flashing and recovery via serial port, providing a stable alternative to Wi Fi updates. Compatible with various ELRS receivers, its a must have for dependable firmware management. *Requires assembly Features RM CRSF JST GH Interface Output Multiple Protective Circuits Standard Pin Compatibility Selectable Output Voltage Spring Loaded Pin Socket DuPont Wires

The RadioMaster ExpressLRS USB UART Firmware Flashing Dongle V2 offers reliable ELRS receiver flashing and recovery via serial port, providing a stable alternative to Wi-Fi updates. Compatible with various ELRS receivers, it’s a must-have for dependable firmware management.

*Requires assembly

Features

  • RM-CRSF JST-GH Interface Output
  • Multiple Protective Circuits
  • Standard Pin Compatibility
  • Selectable Output Voltage
  • Spring-Loaded Pin Socket
  • DuPont Wires Included

 

How to upgrade firmware

  1. Connect the Serial Port Cable with the receiver
  2. Connect to the computer with a USB extension cable, press the receiver's BOOT button, then press the POWER button on the serial tool
  3. Follow the ELRS upgrade tool's instructions to complete the upgrade

Specifications

  • Interface Output: RM-CRSF JST-GH for ER series receiver compatibility
  • Name: RadioMaster ExpressLRS USB UART Firmware Flashing Dongle
  • Protective Circuits: Overcurrent and reverse polarity protection
  • Pin Socket: Spring-loaded for enhanced convenience
  • Included Accessories: DuPont wires for easy testing
  • Pin Compatibility: Standard 2.54mm pins
  • Output Voltage: Selectable 3.3V or 5V
  • Manufacturer: RadioMaster

Includes

  • 1x RadioMaster ExpressLRS USB UART Firmware Flashing Dongle V2
  • 1x 1.25mm Serial Port Cable - Type A
  • 1x 2.54mm Serial Port Cable - Type B
  • 1x Serial Port Test Hook - Green
  • 1x Serial Port Test Hook - White
  • 1x Serial Port Test Hook - Black
  • 1x Serial Port Test Hook - Red
  • 1x Pogo Probe
  • 1x CRSF Wire
  • 1x User Card

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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 32601463159

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SM
Birmingham, US
★★★★★ 5
Great purchase
Material Type: Recycled Polyester, Color: Dark Navy, Size: X-Large
Purchased several shirts, all were great quality. You never know what you’ll get when you purchase sight unseen, these are worth it. Great value, style, and comfort. Color is exactly what you see online. True to size.
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Reviewed in the United States on November 25, 2025
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Jocelyn
Battle Creek, US
★★★★★ 4
Great quality for price
Material Type: Recycled Polyester, Color: Red Stripe, Size: XX-Large
Very impressed with the shirt quality, especially for such a low price. Sizing is accurate.
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Reviewed in the United States on May 21, 2026
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Shawn SnoMan Thompson
West Palm Beach, US
★★★★★ 5
For work or casual wear, this polo is a great choice.
Material Type: Recycled Polyester, Color: Port Stripe, Size: X-Large
I really like this polo. I've been wearing it once a week or every other week since November. Its very comfortable and breathable. This polo feels like it should last a while. The fit is good. I typcally wear XL and this XL fits great. I've pruchased it in both burgundy and black so far. I definitely recommend this shirt. For work or casual wear, this will look good.
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Reviewed in the United States on January 11, 2026
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Tech Dad
Los Angeles, US
★★★★★ 5
Great value: These are my go-to work from home shirt
Material Type: Recycled Polyester, Color: Blue, Size: X-Large
I’ve been pleasantly surprised by these shirts and wear them weekly for Zoom calls, since I’m still working from home these days. I figured at the price point it was worth trying them out, and now I’ve bought several in different colors. They aren’t super soft, but they are comfy and look nice. I’m 6’1” ~220 pounds, and the XL slim fit still has plenty of room. I imagine the regular cut is incredibly boxy and oversized. The difference between polyester vs recycled polyester is inconsequential. I typically buy expensive golf shirts, and these definitely aren’t as nice. They are a fraction of the cost though and a great “beater” work shirt / hang out shirt. It’s nice wearing something that looks and feels decent, but if something happens to it, you can toss and it and pick up another for the cost of a chipotle burrito.
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Reviewed in the United States on May 29, 2022
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Espresso
Draper, US
★★★★★ 3
Great price, not great quality
Material Type: Recycled Polyester, Color: Black, Size: Small
Simple, straight forward all black polo. I am a size medium woman (with some room since I don't like form-fitting) and bought a men's small. Fits perfectly for my frame. Long enough to tuck in for my part-time extra weekend job uniform. Also suitable for the golf course. A little thin, and if you hold it up to light you can sort of see through it. *Not* flowy, soft and smooth fabric like a rash guard/sun shirt - more structured than that. But it's cool and does the job for the price under $10.
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Reviewed in the United States on August 13, 2024

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